crash/0009-Fix-sys-t-mod-S-after-mod-t-when-crash-runs-with-s-o.patch
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Source: https://src.fedoraproject.org/rpms/crash.git#5a0c1d8fb7fcd83df5c5f5de38d3c32d4aa4200b
2021-02-06 13:06:37 +00:00

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From 1be446cb5fbc442103dbb54279f3cc3a61b4c0ff Mon Sep 17 00:00:00 2001
From: Kazuhito Hagio <k-hagio-ab@nec.com>
Date: Wed, 20 Jan 2021 15:16:24 +0900
Subject: [PATCH 09/13] Fix "sys [-t]|mod -S" after "mod -t" when crash runs
with -s option
When crash runs with -s option, SIZE(taint_flag) and OFFSET(tnt_false)
are not set during initialization. If the "mod -t" option is executed,
it sets the former but does not set the latter. After that, the "sys"
command uses OFFSET(tnt_false) without setting it, because it checks
only whether SIZE(taint_flag) is set.
Without the patch, the "sys [-t]" and "mod -S" options after "mod -t"
option fail with the error message:
sys: invalid structure member offset: tnt_false
FILE: kernel.c LINE: 11203 FUNCTION: show_kernel_taints_v4_10()
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
---
kernel.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel.c b/kernel.c
index 272e0d8751cf..5fcd86575be5 100644
--- a/kernel.c
+++ b/kernel.c
@@ -11160,7 +11160,8 @@ show_kernel_taints_v4_10(char *buf, int verbose)
ulong tainted_mask, *tainted_mask_ptr;
struct syment *sp;
- if (!VALID_STRUCT(taint_flag)) {
+ if (!(VALID_STRUCT(taint_flag) &&
+ VALID_MEMBER(tnt_true) && VALID_MEMBER(tnt_false))) {
STRUCT_SIZE_INIT(taint_flag, "taint_flag");
MEMBER_OFFSET_INIT(tnt_true, "taint_flag", "true");
MEMBER_OFFSET_INIT(tnt_false, "taint_flag", "false");
--
2.17.1